ARWadsworth wrote:
What you have here is the standard method of converting a one way
switched light into a two way.

Standard in what way?

It's /a/ standard method: http://www.diyhowto.co.uk/projects/two-way-lighting.htm
I prefer to avoid it unless I have can't, as having five wires
coming out of the switchplate backbox can confuse future
maintainers, even more than a loop-in ceiling rose can.

JGH